cmake_minimum_required(VERSION 3.8)
project(subscriber_package)

if(CMAKE_COMPILER_IS_GNUCXX OR CMAKE_CXX_COMPILER_ID MATCHES "Clang")
  add_compile_options(-Wall -Wextra -Wpedantic)
endif()

# find dependencies
find_package(ament_cmake REQUIRED)
find_package(rclcpp REQUIRED)
find_package(std_msgs REQUIRED)

if(BUILD_TESTING)
  find_package(ament_lint_auto REQUIRED)
  # the following line skips the linter which checks for copyrights
  # comment the line when a copyright and license is added to all source files
  set(ament_cmake_copyright_FOUND TRUE)
  # the following line skips cpplint (only works in a git repo)
  # comment the line when this package is in a git repo and when
  # a copyright and license is added to all source files
  set(ament_cmake_cpplint_FOUND TRUE)
  ament_lint_auto_find_test_dependencies()
endif()

ament_package()

# 添加可执行文件
# 目标名称是 simple_subscriber_node，源文件是 src/simple_subscriber.cpp
add_executable(simple_subscriber_node src/simple_subscriber.cpp)

# 链接依赖库
# 这是 ament_cmake 的方式，它会自动处理包含目录和链接库
ament_target_dependencies(
  simple_subscriber_node
  rclcpp
  std_msgs
)

# 安装可执行文件
# 这样 colcon build 后，我们才能用 ros2 run 来找到它
install(
  TARGETS simple_subscriber_node
  DESTINATION lib/${PROJECT_NAME}
)
	